package tests;

import java.util.Scanner;

public class test16 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()){
            int n = sc.nextInt();
            int count = 0;
            for(int i = 2;i<Math.sqrt(n);i++){
                if(n%i==0){
                    while(n%i==0){
                        n=n/i;
                    }
                    count++;
                }
            }
            if(n!=1) count++;
            System.out.println(count);
        }
    }
}
